by Tom Mansell, Science Editor Nothing scientific about today's post. After all, there's really nothing scientific about a recipe… unless it involves careful record keeping and experimentation, which it almost never does.  Anyway, if your family is anything like mine, Christmas is only the beginning of a slew of holiday parties culminating on New Year's Eve. So if you're hosting or attending a holiday party, allow me to suggest a hot drink to serve (in small amounts) to friends and family. Since Lenn and I are both of Lithuanian heritage, I thought I should post this Eastern European treat, which…